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dc.contributor.authorLi, G-
dc.contributor.authorHong, Z-
dc.contributor.authorPang, Y-
dc.contributor.authorXu, Y-
dc.contributor.authorHuang, Z-
dc.identifier.citationLi, G., Hong, Z., Pang, Y., Xu, Y. and Huang, Z. (2022) 'Resource allocation for sum-rate maximization in NOMA-based generalized spatial modulation', Digital Communications and Networks, 0 (In press), pp. 1- 8. doi: 10.1016/j.dcan.2022.02.005.en_US
dc.description.abstractThe Multiple-input Multiple-output (MIMO) Non-orthogonal Multiple Access (NOMA) based on Spatial Modulation (SM-MIMO-NOMA) system has been proposed to achieve better spectral efficiency with reduced radio frequency chains comparing to the traditional MIMO-NOMA system. To improve the performance of SM-MIMO-NOMA systems, we extend them to generalized spatial modulation scenarios while maintaining moderate complexity and fairness. In this paper, system spectral efficiency and transmission quality improvements are proposed by investigating a sum-rate maximization resource allocation problem that is subject to the total transmitted power, user grouping, and resource block constraints. To solve this non-convex and difficult problem, a graph-based user grouping strategy is proposed initially to maximize the mutual gains of intragroup users. An auxiliary-variable approach is then adopted to transform the power allocation subproblem into a convex one. Simulation results demonstrate that the proposed algorithm has better performance in terms of bit error rate and sum rates.en_US
dc.format.extent1 - 8 (8)-
dc.rightsCopyright © 2022 Chongqing University of Posts and Telecommunications. Publishing Services by Elsevier B.V. on behalf of KeAi Communications Co. Ltd. under a Creative Commons license (
dc.subjectResource allocationen_US
dc.subjectSpatial modulationen_US
dc.subjectPower allocationen_US
dc.subjectUser groupingen_US
dc.titleResource allocation for sum-rate maximization in NOMA-based generalized spatial modulationen_US
dc.relation.isPartOfDigital Communications and Networks-
dc.rights.holderThe Author(s) and KeAi Communications Co. Ltd.-
Appears in Collections:Dept of Electronic and Electrical Engineering Research Papers

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